CVE-2026-45873
netfilter: nft_set_rbtree: check for partial overlaps in anonymous sets
MEDIUM 5.5
At a glance
- Source
- NVD
- EPSS
- EPSS 0.16 % · percentile 5 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Analyzed
Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_set_rbtree: check for partial overlaps in anonymous sets Userspace provides an optimized representation in case intervals are adjacent, where the end element is omitted. The existing partial overlap detection logic skips anonymous set checks on start elements for this reason. However, it is possible to add intervals that overlap to this anonymous where two start elements with the same, eg. A-B, A-C where C < B. start end A B start end A C Restore the check on overlapping start elements to report an overlap.
References
- https://git.kernel.org/stable/c/7ca5813e1b21ef300e04593f47b073ef3217aac6
- https://git.kernel.org/stable/c/029e5f6a95e905b12d6bc20421be32a01e0eb311
- https://git.kernel.org/stable/c/f1381ce0a1dd013610985e1c4260908163a427df
- https://git.kernel.org/stable/c/f1535d56fc3f6c625b7e0559c006bd0318791bb1
- https://git.kernel.org/stable/c/05feaf826390fd16f1deb89dd9412def3b2a280f
- https://git.kernel.org/stable/c/dad14d22dff1a191612acb98facceb303d0524a2
- https://git.kernel.org/stable/c/e6497e06a102870803a59570d75ed2c36d7e11b3
- https://git.kernel.org/stable/c/4780ec142cbb24b794129d3080eee5cac2943ffc
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2026-32339
- GCVE · GCVE-0-2026-45873
CERT-FR advisories
- CERTFR-2026-AVI-1229 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1093 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1091 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1064 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0985 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0954 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0926 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0861 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0831 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0696 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.19.316 < 4.20cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.4.262 < 5.5cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.10.166 < 5.10.252cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.15.91 < 5.15.202cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.1.9 < 6.1.165cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.2.1 < 6.6.128cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.7 < 6.12.75cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.13 < 6.18.14cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.19 < 6.19.4cpe:2.3:o:linux:linux_kernel:6.2:-:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.2:rc6:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.2:rc7:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.2:rc8:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 4aacf3d78424293e318c616016865380b37b9cc5 < 7ca5813e1b21ef300e04593f47b073ef3217aac6 ; affected 2bf1435fa19d2c58054391b3bba40d5510a5758c < 029e5f6a95e905b12d6bc20421be32a01e0eb311 ; affected 318cb24a4c3fce8140afaf84e4d45fcb76fb280b < f1381ce0a1dd013610985e1c4260908163a427df ; affected c9e6978e2725a7d4b6cd23b2facd3f11422c0643 < f1535d56fc3f6c625b7e0559c006bd0318791bb1 ; affected c9e6978e2725a7d4b6cd23b2facd3f11422c0643 < 05feaf826390fd16f1deb89dd9412def3b2a280f ; affected c9e6978e2725a7d4b6cd23b2facd3f11422c0643 < dad14d22dff1a191612acb98facceb303d0524a2 |
| Linux · Linux | affected 6.2 ; unaffected 0 < 6.2 ; unaffected 5.10.252 ≤ 5.10.* ; unaffected 5.15.202 ≤ 5.15.* ; unaffected 6.1.165 ≤ 6.1.* ; unaffected 6.6.128 ≤ 6.6.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |